Cartridge.



I. B. MAC'KEY.

CARTRIDGE. APPLICATION FILED 001228, 1914.

1,149,387. Patented Aug. 10,1915.

m under,

. OHN @MHCKEY wwnamw JOHN B. MACKEY, OF LA'IHROP, PENNSYLVANIA.

CABTRID GE.

Specification of Letters Patent. 7

Patented Aug. 10, 1915.

Application filed October 28, 1914. Serial No. 869,100.

To all whom it may concern:

Be it known that I, JOHN B. Maonnv, a citizen of the United States,residing at Lathrop. in the county of Susquehanna and State ofPennsylvania, have invented certain new and useful Improvements inCartridges, of which the following is a specification, reference beinghad to the accompanying drawings.

This invention relates to certain improvements in cartridges and hasrelation more particularly to a device of this general characterespecially designed, and adapted for use for blasting purposes; and theobject of the invention is to provide a novel and improved device ofthis general character whereby the direction of the force of theexplosion may be readily and conveniently controlled whereby the same isparticularly adapted for use in quarries.

The invention consists in the details of construction and in thecombination and arrangement of the several parts of my improvedcartridge whereby certain important advantages are attained and thedevice is rendered simpler, less expensive and otherwise more convenientand advantaous for use, all as will be hereinafter more l llly setforth.

The novel features of the invention will be carefully defined in theappended claims.

In order that my invention may be the better understood, I will nowproceed to describe the same with reference to the accompanyingdrawings, wherein Figure 1 is a view in perspective of a cartridgeconstructed in accordance with an embodiment of my invention; Fig. 2 isa side elevational' view thereof illustrating the same inapplied'position; Fig. 3 is a view in perspective, on an enlarged scale, of theplug embodied in my present invention; and Fig. 4 is an outer endelevational view.

As disclosed in the accompanying drawings. 1-1 denote duplicate sectionsof the shell comprised in my improved cartridge and of substantiallyrectangular form and adapted to be disposed in superimposed relation,with adjacent extremities of such sections disposed in converging planeswhereby a shell of substantially wedge formation is produced with oneend substantially straight while the opposite end is of diamondformation. The longitudinalmargmal portions of the sections, as hereindisclosed, are united or connected by the fragile bonds 2, preferably ofwire, and which are adapted to afford a minimum of resistance when theexplosive within the shell is caused to explode. The marginal portionsof the sections are provided with the openings 3 adapted to register andthrough which the wires or bonds 2 are directed, as is believed to beclearly set forth in the accompanying drawings. However, I have found inpractice that means other than the wire bonds 2 may be employed withequal facility, such as paraffin.

The open end of the shell is adapted to be closed by the pointed plugmember 4 of a configuration in transverse section substantiallyidentical with the transverse section of the assembled shell, and it isto be observed that one side portion of the plug is cut-away, as at 5,to permit the insertion within the shell of the battery wire a wherebythe explosive E may be caused to explode. This cut-away portion 5 willalso permit the insertion of a conventional fuse if such an arrangementshould be desired. 1 also find it of advantage to provide amarginalportion of the shell adjacent the closed end thereof with an opening 6for the insertion of a fuse when the requirements of practice sorequire.

As is believed to be self-evident, my improved cartridge is adapted tobe suitably inserted and packed if desired within an opening boredwithin the material to be blasted, and it will be readily perceived bythose skilled in the art that the thickness or width of the cartridgevaries according to the diameter of the hole or opening in which it isto be inserted.

From the foregoing description, it is thought to be obvious that acartridge constructed in accordance with my invention is of an extremelysimple and comparatively inexpensive nature and is particularly welladapted for use by reason of the convenience and facility with which itmay be assembled, and it will also be obvious that my invention issusceptible of some change and modification without material departurefrom the principles and spirit thereof and for this reason I do not wishto be understood as limiting myself to the precise arrangement andformation of the several parts herein shown in carrying out my inventionin practice.

I claim:

1. A cartridge of the character described includinga shell comprisingsuperimposed sections having their longitudinal and one end marginalportions closed, said sections .having adjacent end portions disposed inincluding a shell comprising superimposed sections having theirlongitudinal and one end marginal portions closed, sa1d closed end beingstraight, said sections having adjacent end portions disposed in planesconverging toward the closed end of the cartridge, the opposite endportion of the shell being substantially diamond-shape in cross Isection, and a plug member for closing the open end of the cartridge.

3. A cartridge of the character described comprising superimposedsections having their longitudinal and one end marginal portions closed,said closed end being straight, said sections havingadjacent end.portions disposed in planes converging to- V the closed end thereofbeing provided with an entrance opening.

4. A cartridge of the character described including a shell comprisingsuperimposed sections having their longitudinal and one end marginalportions closed, said sections having adjacent end portions disposed inplanes converging toward the closed end of the cartridge, said closedend being straight, the opposite end portion of the shell beingdiamond-shape in cross section, and fragile means for maintainingthesections in superimposed relation.

In testimony whereof I hereunto aflix my signature in the presence oftwo witnesses. JOHN B. MACKEY, YVitnesses:

L. J. STERLING, I G. O. RonERTs.

' Copies of this patent may be obtained for five cents each, byaddressing the f Commissioner of Patents,

Washington, D. 0. i

